Productive performance of suckling calves fed diets supplemented with zinc methionine
Abstract: Twenty newly born suckling Friesian calves were divided into four similar groups (5 calves each) after fed one week on colostrums and fed on ration supplementation with the same level of zinc methionine as their dams (Shakweer et a/,2005) (0.00, 40,80 and 120 mg zinc/head/day NRC (1988) during their 120 days sulking period to study the effect of zinc methionine supplementation on nutrient digestibility, feed efficiency, and calves performance. Rumen and blood parameters were also investigated Calves were individually fed on rations consisted of starter, berseem hay and assigned whole milk. Results indicated that addition of zinc methionine increased (P<0.05) the digestibility of all nutrients which was reflected on the nutritive values (as TDN ,DCP ). Addition of 40mg zinc methionine /h/d showed higher calves daily gain than that of the other levels or that of the control group. Concerning rumen parameters, results showed that although higher total protein, pH and volatile fatty acids (TVFA's) were increased by increasing the level of zn methionine supplementation in the ration, yet ammonia-N was decreased.
Generally, it cold be concluded that addition of 40mg zinc methionine /h/d improved nutrient digestibility, feed efficiency and Friesian suckling calves daily gain
Keywords: Friesian calves- zinc methionine - feed intake and efficiency
digestibility- ruminal and blood parameters.
Publication year 2005
Pages 3037-3046
Availability location معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى- الجيزة
Availability number
Organization Name
City المنصورة
serial title Journal Agricultural Science Mansoura University
ISSN 1110-0346
Author(s) from ARC
Agris Categories Animal feeding
AGROVOC
TERMS		 Digestibility. Feed conversion efficiency. Feed intake.
Proposed Agrovoc suckling calves;zinc methionine;ruminal and blood parameters;
Publication Type Journal
↑