Sunflower meal has been used to feed ruminants for a long time and was appreciated in the 19th century as an excellent ingredient (Cornevin, 1892). Numerous experiments have since confirmed that, even in its non-dehulled form, sunflower meal can be used without problems as a protein supplement in ruminant diets. Sunflower meal can replace soybean meal (and other oil meals with a higher protein content, such as cottonseed meal or groundnut meal), provided that the diet is properly balanced for protein and fibre. Due to its high variability, users should allow for the precise protein, fibre and oil content of the sunflower meal used in the diet.
Nutritional value
Digestibility
In vivo OM digestibility of sunflower meal varies from 52 to 74% and is negatively correlated to fibre content: dehulled meals tend to be more digestible (about 66%) than non-dehulled meals (61%) (Economides, 1998; Irshaid et al., 2003; Molina Alcaide et al., 2003; Woods et al., 2003a; Arroyo et al., 2005; Beran et al., 2005; Mondal et al., 2008; Marcondes et al., 2009; Goes et al., 2010). ME values range from 8.6 to 11 MJ/kg DM.
Protein value
Sunflower meal protein is more degradable than that of other oil meals (Poncet et al., 2003). Values are usually in the 70-80% range though lower values as well as values over 90% have been reported (Sauvant et al., 2004; Domingues et al., 2010; Economides, 1998; Gonzalez et al., 1999; Molina Alcaide et al., 2003; Pop et al., 2006). In animals fed sunflower meal, rumen ammonia rapidly increases within 4 hours after feeding, which facilitates microbial synthesis and OM digestion (Shayo et al., 1997a). Heat treatment or toasting increases the proportion of rumen undegradable protein (Anderson, 2002). A treatment combining acid and heat reduced protein degradability from 80% to 34-38% (Arroyo et al., 2005). Fibrolytic enzymes may be used in the ration to break down sunflower fibres, releasing more energy and protein (Titi, 2003).
Dairy and beef cows
Sunflower meal can be the sole source of supplementary protein in diets for dairy cows (Blair, 2011). Milk production was similar when partially dehulled (Schingoethe et al., 1977) or fully dehulled sunflower meal (Parks et al., 1981) replaced soybean meal in dairy cow diets (Blair, 2011). In the USA, sunflower meal has been widely used in beef cow supplementation programs (Anderson, 2002). The following table presents examples of utilization of sunflower meal in dairy diets around the world:
Country |
Animals |
Experiment |
Inclusion rate |
Results |
Reference |
United States |
Lactating Holstein cows |
Replaced soybean meal (partially dehulled) |
31% |
No effect on milk yield and composition |
Schingoethe et al., 1977 |
United Kingdom |
Lactating Friesian cows |
Compared to soybean meal and rapeseed meal (with maize silage). Sunflower meal supplemented with fish meal and meat and bone meal |
76% |
No effect on milk yield and composition |
Vincent et al., 1990 |
France |
High yielding dairy cows |
Replaced rapeseed meal |
15% |
No effect on milk yield (31.9 kg) and composition |
Brunschwig et al., 2002 |
Tanzania |
Crossbred zebu cows |
Sunflower meal added to maize bran,
4 kg/d |
31% |
Increased milk yield (8.1 vs. 6.6 l/d),
no effect on milk composition |
Mlay et al., 2005 |
Tanzania |
Mpwapwa cows |
Sunflower added to maize bran, 2 kg/d |
50% |
Increased milk yield (5.5 kg/d vs. 4.6 kg/d) |
Shayo et al., 1997b |
Zimbabwe |
Jersey,
Red Dane, crossbred cows |
Farm-made concentrate with maize and expeller sunflower cake, 4.5 kg/d + pasture + urea-treated maize stover |
39% |
No effect on maize stover DMI, milk yield (5.8-6.0 kg/d) and milk protein (3.5-3.7%) but lower milk fat content (4.0 vs. 4.3%) which may be due to lower rumen acetic and butyric acids |
Ngongoni et al., 2007 |
India |
Crossbred cows |
Replaced groundnut and mustard meal in concentrate (3.6-3.8 kg/d) + oat forage |
19-38% |
No effect on forage DMI (120 g/kg W0.75 ), DM digestibility (64-66%), milk yield (7.1-7.5 kg/d), milk fat (4.2-4.7%), milk protein (3.4-3.8%) |
Sharma et al., 2003 |
India |
Crossbred cows |
Replaced 50 or 75% cottonseed meal |
|
Lower milk yield at 75% replacement (9.12 kg/d) but no effect at 50% (9.77 kg/d) |
Bade et al., 2008 |
Pakistan |
Lactating crossbred cows |
Replaced cottonseed meal concentrate (1kg/2kg of milk) |
18-40% |
No effect on milk yield (9.15 vs. 9.59 kg/d) and milk fat (4.5%) but lower weight gain |
Jabbar et al., 2008 |
Sunflower meal is also used in the diet of dairy buffaloes:
Country |
Animals |
Experiment |
Inclusion rate |
Results |
Reference |
India |
Dairy buffaloes |
Replaced groundnut and mustard meal in concentrate (3.6-3.8 kg/d) + oat forage |
19-38% |
No effect on DMI, DM and OM digestibility, milk yield (5.4-5.6 kg/d), milk fat (7%) and milk protein (3.7%) |
Sharma et al., 2003 |
Pakistan |
Lactating
Nilli-Ravi buffaloes |
Replaced 38% cottonseed meal |
15% |
Increased milk yield (8.2 vs. 7.4 kg/d) and fat content (6.32 vs. 6.20%) |
Jabbar et al., 2009 |
Ibid. |
Ibid. |
Replaced 100% cottonseed meal |
28% |
Decreased milk yield (7.4 vs. 7.8 kg/d) and increased fat content (6.31 vs. 6.20%) |
Ibid. |
Growing cattle
Sunflower meal can be used as the sole source of protein in beef rations. In trials comparing sunflower meal with other protein sources, a similar performance was commonly observed in animals receiving isonitrogenous diets from different sources (Richardson et al., 1981; Anderson, 2002). The following table presents examples of utilization of sunflower meal in diets for growing cattle from around the world:
Country |
Animals |
Experiment |
Inclusion rate |
Results |
Reference |
Australia |
Weaned beef calves |
3 kg sunflower meal + cereal grains + hay |
|
1200 g/d over 70 d |
Dove et al., 2008 |
Zimbabwe |
Heifer calves, 26 d |
Farm-grown calf meal, TMR |
39% |
No effect on DMI and daily weight gain |
Mandibaya et al., 1999 |
Pakistan |
Buffalo calves, 10-11 m, 100 kg |
Replaced up to 100% cottonseed meal |
Up to 36% |
Decreased DMI, diet digestibility and ADG (990 to 330 g/d), possibly due to increase in dietary lignin (3.5 to 6.4% DM) |
Yunus et al., 2004 |
Pakistan |
Male calves, 9-10 m,
70-90 kg |
Replaced up to 100% cottonseed meal;
2.5 kg forage |
Up to 28% |
No effect on DMI (5.5 kg) and ADG (720 g/d) |
Jabbar et al., 2006 |
Italy |
Steers,
700 kg |
Supplemented diet based on hay, straw and fam-mixed compound feed |
|
No effect on daily weight gain (1200-1300 g/d) and carcass parameters |
Mattii et al., 2009 |
Texas, USA |
Steers,
270 kg |
Diet based on hay and urea |
Up to 20% |
No effect on DM, OM and protein digestibility |
Richardson et al., 1981 |
Ibid. |
Steers,
296 kg |
Replaced cottonseed meal in TMR 10.8% protein |
5.5-11% |
No effect on diet digestibility and N retention |
Ibid. |
Ibid. |
Ibid. |
Ibid. but TMR 13% protein |
22% |
Higher DM and protein digestibility |
Ibid. |
Brazil |
Steers, 20 m, 370 kg |
55-60% maize silage + sunflower meal + energy source (maize grain, soybean hulls, maize germ meal) |
20-25% |
No effect on DM digestibility, carcass quality and ADG (1110-1170 g/d) for all energy sources; higher microbial efficiency with soybean hulls or maize germ meal |
Mendes et al., 2005a; Mendes et al., 2005b; Mendes et al., 2006 |
Brazil |
Bulls, 380 kg |
Replaced 0 to 100% cottonseed cake in diet based on sugarcane silage |
Up to 41% diet |
DMI decreased at 75% and 100% (112-107 g/kg W0.75 vs. 119-125 g/kg 0.75). No effect on rumen pH and NH4 |
Domingues et al., 2010 |
Brazil |
Growing dairy cattle, 285 kg |
Replaced soybean meal (with maize silage) |
Up to 45% |
No effect on diet digestibility and silage DMI, but ADG tended to increase (1055-1211 g/d) |
Garcia et al., 2004; Garcia et al., 2006 |
Sheep
Dairy ewes
Sunflower meal can replace other protein sources in the diets of dairy ewes. Expeller sunflower cake (16% oil) tend to increase milk concentration of the c9,t11-CLA isomer and of unsaturated fatty acids (Amores et al., 2010). The following table summarises findings in dairy ewes fed sunflower meal:
Country |
Animals |
Experiment |
Inclusion rate |
Results |
Reference |
Spain |
Latxa,
60-65 kg |
Replaced 15% soybean meal (with hay and pasture) |
|
No effect on milk yield (1.2 kg/d) and milk fat content (6.1%) |
Mandaluniz et al., 2010 |
Cyprus |
Chios,
61-63 kg |
Replaced 100% soybean meal |
20% |
No effect on milk yield (1.5 kg/d) and milk fat content (5.7%) |
Economides, 1998 |
Jordan |
Awassi,
55-59 kg |
Replaced up to 100% soybean meal in TMR |
20-38% |
Lower milk yield (0.26 vs. 0.31 kg/d) but same mik fat content (6.9-7.0%) |
Irshaid et al., 2003 |
India |
Ewes, 29 kg |
Replaced groundnut meal as sole concentrate (with straw) |
|
No effect on DMI (44-46 g/kg W0.75) and digestibility of DM (55-57%), OM (58-60%) and protein (51%) |
Dutta et al., 2002 |
Fattening lambs
Sunflower meal was also found to promote better wool growth than cottonseed meal due its higher content in sulfur-containing amino acids (Richardson et al., 1981). The table summarises trials which have tested successfully the inclusion of sunflower meal in fattening lamb diets as a substitute for soybean meal, cottonseed meal or groundnut meal:
Country |
Animals |
Experiment |
Inclusion rate |
Results |
Reference |
Texas, USA |
27 kg |
Replaced cottonseed meal in sorghum-based diet (12% protein) |
5.5-22% |
No effect on ADG (0.230-0.260 g/d) and wool growth (6.2-6.9 g/cm²) |
Richardson et al., 1981 |
Ibid. |
Ibid. |
Replaced cottonseed meal in sorghum-based diet (8% protein) |
5% |
No effect on ADG but higher wool growth (6.95 vs. 5.90 g/cm²) |
Ibid. |
Brazil |
14 kg |
Replaced 50 or 100% soybean meal in lambs fed low quality forage |
|
ADG decreased from 140 g/d to 88-101 g/d, carcass characteristics linked to body weight decrease, but proportions (meat, fat) stayed the same |
Louvandini et al., 2007 |
Portugal |
20 kg, 3 m |
Fed 90% maize grain and rye-grass pasture |
10% |
ADG 167 g/d |
Santos-Silva et al., 2003 |
Sudan |
21.4 kg |
Compared to groundnut, sesame and cottonseed cake in TMR (14.5% protein) |
30% |
No effect on ADG (183 g/d) and DMI (1.18 kg/d). Some carcass composition parameters lower than with groundnut cake or sesame cake |
Suliman et al., 2007 |
Jordan |
Awassi,
40-43 kg |
Replaced 50 or 100% soybean meal |
17-35% |
No effect on ADG and diet digestibility |
Irshaid et al., 2003 |
India |
9-10 m,
27.6 kg |
Replaced groundnut meal in TMR, 115 d ad libitum |
13% |
No effect on DMI (1-1.2 kg), digestibility (DM 56-59%, OM 59-62%, protein 59-62%), ADG (75-83 g/d) and carcass traits |
Nagalakshmi et al., 2011 |
Pakistan |
18.5 kg,
9-12 m |
Replaced up to 100% cottonseed meal in TMR (17% protein), ad libitum |
12-36% |
No effect on weight gain (6-6.8 kg), higher DMI: 3.7 vs. 2.7 kg/d |
Yagoub et al., 2009 |
Goats
There is limited information on the use of sunflower meal in goats, but it is generally possible to replace some of the main diet ingredients with sunflower meal without degrading performance, as summarized in the table below:
Country |
Animals |
Experiment |
Inclusion rate |
Results |
Reference |
Spain |
Dairy goats |
Replaced soybean meal in TMR, 22 weeks |
9% |
No effect on milk yield, milk composition |
Fernandez et al., 2004 |
Spain |
Dairy goats,
1 kg milk/d,
43 kg |
Comparison with cottonseed, faba beans or corn gluten feed |
20% |
Higher milk production but lower milk protein |
Sanz Sampelayo et al., 1999 |
Spain |
Dairy goats, 38 kg |
Replaced soybean meal in TMR, 30 days |
9% |
No effect on milk yield, milk composition, higher DMI |
Fernandez et al., 2003 |
Cyprus |
Dairy goats,
2 kg milk/d |
Replaced part of soybean meal
and 50% straw |
20% |
No effect on milk yield, milk composition |
Economides, 1998 |
Jordan |
Growing kids |
Replaced soybean meal in TMR (15% protein) |
20% |
No effect on DMI and ADG |
Titi, 2003 |
India |
Male goats, 25 kg |
Replaced groundnut meal |
20% |
No effect on DMI, DM and OM digestibility but lower N digestibility |
Dutta et al., 2002 |