Milk Production and Feed Utilization of Zaraibi Goats Fed Some Forage Protein Sources Such as Berseem or Kochia Silage and Their Mixture With Fodder Beet.

Abstract

Eighteen dairy Zaraibi goats in 2 nd , 3 rd and 4 th season of lactation with average body weight of 37.87kg were divided randomly into three equal groups, to study the effect of substitution of berseem silage by Kochia as a source of protein in silage rations on milk yield, blood profile and feed efficiency of dairy goats. Half the crude protein (CP) requirements of lactating goats were covered from CFM. The other 50% of CP was covered from: berseem silage in the first group (G1), 50% berseem+50% fodder beet silage in second group(G2), 50% Kochia+50% fodder beet silage in third group (G3). The feeding trails lasted for 14 weeks. The obtained results showed that the crude protein (CP) and crude fiber (CF) percentages of berseem silage were higher 14.20 and 29.80% than the other silages. But, the content of EE and NFE were lower (2.05 and 41.95%) in berseem silage compared with two mixture silages. But, organic matter (OM) was nearly similar in the different silages. The effect of the tested silages on most hemato-biochemical parameters was not significant. Concerning milk production, the obtained data indicated that the highest value of milk yield was recorded with G1 (845g/h) followed by G2 (761g/h), while the lowest value (727g/h) was recorded with G3 and the differences were significant. Moreover, milk fat percentage was significantly (P<0.05) higher with G3 (Kochia-fodder beet silage) compared with the other groups. The same trend was observed also with total solids among the three groups. The effect of experiment rations on other milk content (milk protein, lactose and ash) and milk quality parameters was not significant. The feed conversion efficiency based on DM and CP, was better with G1 compared G3. On the contrary, the economic efficiency was better with G3 compared with the other groups.

Effect of Feeding Different Types of Silage (Berseem or Kochia and Their Mixture With Fodder Beet) on Growth Performance of Growing Male Goats.

“…Concerning Ca and P contents in blood, despite diminishing differences among treatments, Ca content with G3 ration was lesser significantly than that of G1 and G2 ones, while P content was higher significantly with both tested rations than control one. The obtained values are within the normal physiological ranges that reported by Kaneko (1989) for healthy goats and in the line with the findings of Ahmed et al (2001) and Maged et al (2014) who used mixture of silages such as Kochia-Teosinet and Kochia-fodder beet in rations of dairy goats. The present results are in harmony with those obtained by Fahmy and Fayed (2000) who found insignificant differences respecting contents of total protein, albumen and globulin in blood of sheep and goats fed Kochia indica hay vs. berseem hay in addition concentrate feed mixture to cover 50 % of their energy requirements.…”

“…The daily total DM intake as g/h or g/kgw 0.75 tended to slightly decrease with tested rations (G2 and G3) compared with control group G1, being 683 and 676 vs. 705 g/h and 61.87 and 61.51 vs. 62.22 g/kgw 0.75 , respectively. Similar results were reported by Maged et al (2014) with dairy goats. They found that the highest values of daily feed intake as g/h or g/kgw0.75 were recorded with berseem silage (1141 or 75.31, respectively) then berseemfodder beet silage (1120 or 73.01) and lastly, Kochia-fodder beet silage (1099 or 71.78) respectively.…”

“…While the contents of DM, OM, ADF and cellulose were nearly similar in the three experimental silages. Similar results on the some types of tested silages were reported by Maged et al (2014). In this respect, Ahmed et al (2013) found that berseem silage contained 29.50% DM, 87.95% OM, 29.67% CF, 14.15% CP, 2.03% EE, 42.10% NFE and 12.05% Ash.…”

“…Berseem , fodder beet and Kochia indica were cultivated in El-Serw Experimental Station. Kochia indica were harvested during May and June at mid-bloom stage as reported by Shehata et al (2001) and Maged et al (2014). Berseem silage in the first group was prepared by adding 3% molasses on fresh basis as reported by Ahmed et al (2013) and El-Emam et al (2014).…”

“…In a recent study on using some protein sources such as berseem or Kochia silage and their mixture with fodder beet in rations of lactating goats, Maged et al (2014) found that both milk yield and feed conversion were better with berseem silage and their mixture with fodder beet compared with the others, but milk fat percentage was significantly (P<0.05) higher with silage made from Kochia and fodder beet together compared with berseem silage singly or as mixtures with fodder beet.…”