Broccoli byproduct-wheat straw silage as a feed resource for fattening lambs1

Abstract

The effect of feeding broccoli byproduct-wheat straw silage (BBWS) (69:31 ratio, DM basis) on performance, microbial N synthesis (MNS), rumen and blood parameters in Fashandy lambs were evaluated. Three diets, with equal metabolisable energy and crude protein (CP) with a forage to concentrate ratio of 27:73 (DM basis), were formulated in which forage (lucerne and wheat straw) was replaced by BBWS (0, 100, or 200 g/kg of diet DM). These were assigned to 3 groups (n = 15/group) in a completely randomized block design for a 70-d period in which diets were offered as a total mixed ration. For each animal, dry matter intake (DMI), average daily gain (ADG), in vivo apparent digestibility, MNS, N retention, rumen and blood parameters were measured. The BBWS diets had no influence on DMI, ADG, and feed conversion efficiency, in vivo apparent digestibility coefficients of DM, OM, CP, and ash-free NDF. Neither MNS and N retention nor serum concentrations of glucose, triglycerides, creatinine, cholesterol, urea N, triiodothyronine, thyroxine, total protein, albumin, and globulin were affected. Rumen pH, NH3-N, short-chain fatty acid concentrations, the ratio of acetic to propionic acid, and protozoa numbers were, also, not influenced. In summary, BBWS may be fed to Fashandy lambs up to 200 g/kg of diet DM without any adverse impacts on growth performance.

Improving Performance of Lactating Goats Fed Rations Containing Boroccoli by Products (Brassica oleracea)

“…pekinensis) or control that free from any leaves and they showed a significantly (P < 0.05) higher of feed intake and body weight gain (529 g DM/day and 87.5 g/day, respectively) for cauliflower group and significantly lower of feed intakes of cabbage and Chinese cabbage groups comparing with those of control ration. On the other hand, Partovi et al (2020) documented that fattening lambs fed on BB-wheat straw silage in substituting up to 200 g of forage had no effect on DMI values between the tested groups and the control one. Also, Hu et al (2011) claimed that productive performance did not affected by inclusion of broccoli leaf and stem powder in laying hens diets at 0, 30, 60 and 90 g/kg of the diets.…”

“…Also, de Evan et al ( 2020) demonstrated that rumen CP degradability of broccoli stems was 9.8% higher (P<0.001) than that of florets and in contrary, in vitro intestinal DM and CP digestibility of stems was lesser than those of florets. On the other hand, Partovi et al (2020) demonstrated that fattening lambs fed a mixture of BB with wheat straw silage substituted up to 200 g of forage had no effect on the apparent digestibility of DM, EE, OM and CP. Contrary, Nkosi et al (2016) mentioned that the digestibility of OM and NDF were decreased with increasing the levels of discards cabbage (Brassica oleracea) incorporation into lambs diets (73 % vs. 65 %; 56 % vs. 47%, respectively; compared with those fed the control ration that free from discarded cabbage.…”

“…Feed conversion in term of (DMI), (TDNI) or (DCPI) kg DMI/FCM kg milk was significant (P < 0.05) improved with the tested rations compared with those of control one, with the best ones whose occurred with the 20 % BB-ration (T2) as illustrated in (Table 4). Otherwise, Partovi et al (2020) documented that fattening lambs fed mixture of BB -wheat straw silage in substitution up to 200 g of forage had no effect on feed conversion ratio. According to Mueller et al (2012) their results showed that piglets fed broccoli extract diets had a positive impact on body weight gain and feed conversion in the first week.…”

“…The inclusion of BB as a mixture with wheat straw silage (BBWS) in the diet of fattening lambs up to 200 g/kg DM is becoming equivalent to a diet of alfalfa-wheat straw in its feeding values. At this level, it is considered as a safe feed for sheep, with no negative effects on their growth performance or health (Partovi et al, 2020). Generally, de Evan et al (2020) stated that dry matter of certain vegetable residues is high in fiber and protein and such residues could be fed to ruminants, however more researches is needed to determine and prove their nutritional value.…”

“…In agreement with these results Mahmoud (2016) estimated that TP and AL concentrations were significantly (P < 0.05) higher with lambs fed diets containing different levels of BB compared to those of control diet. Otherwise, Partovi et al (2020) mentioned that fattening lambs fed mixture of BB -wheat straw silage substituted up to 200 g of forage in their diets had no effect on blood total protein, albumin and globulin concentrations. Physiologically, albumin is an important protein for maintaining stability of osmotic pressure in the blood (Craig, 1999).…”