scholarly journals Effect of Finnsheep crossbreeding on Lamon sheep performance: in vivo traits

1988 ◽  
Vol 60 (6) ◽  
pp. 511-514
Author(s):  
G. Bittante ◽  
E. Pastore

The objective of this trial was the comparison of the in vivo traits of Lamon (L), a local meat breed of the Eastern Italia Alps, and Finnsheep X Lamon (F x L) fattening lambs. Forty-one lambs (25 L and 16 F x L) of both sexes were weaned at 8 weeks of age and fattened for 14 weeks. The diet (11,6 MJ/kg d.m.M.E.) consisted of maize silage ad lib., 200 g/d of dried sugar beet pulp, 150 g/d of soybean meal and 30 g/d supplement. F x L lambs grew slightly more than L lambs (197 vs 176 g/d; P < .1) during the suckling period but not during the fattening period (207 vs 203 g/d; n.s.), reaching a slightly higher slaughter weight (36.9 vs 35.5 kg; n.s.). Crossbred lambs consumed, during fattening, slightly more d.m. (75.9 vs 73.1 g • d-1 • kg-1 • L.W.-75) and M.E. ( .88 vs .85 MJ • d-1 • kg-1• L.W.-75). D.M. conversion was not different (4.24 vs 4.16; P > .1) while M.E. requirements for growth, estimated assuming a maintenance requirement of.44 MJ • d-1 • kg-1 • L.W.-75, resulted higher (+7 %) for F x L than for L lambs (2.18 vs 2.04 MJ • kgDG • kg-1 • L.W.-75; P < .1). The ram-lambs showed superior growth potential and feed efficiency in respect to the ewe-lambs. In conclusion it appears that crossbreeding with Finnsheep is not detrimental to the in vivo performance of fattening Lamon lambs except for a slight increase of the energy requirements for growth.

1988 ◽  
Vol 60 (6) ◽  
pp. 515-517
Author(s):  
M. Bonsembiante ◽  
I. Andrighetto ◽  
G. Cozzi

This experiment was conducted in order to study the effects of crossbreeding of the local breed Lamon (L) with Finnsheep (F),on the post-mortem performance of F, lambs (F x L). Nine L and 8 F x L ram-lambs were fattened with a diet (11.6 MJ M.E./kg d.m.) based on maize silage, dried sugar beet pulp and soybean meal, and slaughtered at 40.5 ± 5.9 kg live weight at the age of 22 weeks. Genotype did not affect dressing percentage on empty body weight (E.B.W.) but the crossbred lambs showed a lower incidence of the pelt (18,4 vs 20.2 % on E.B.W.; P


1995 ◽  
Vol 1995 ◽  
pp. 178-178
Author(s):  
A H Stewart ◽  
S A Edwards ◽  
V R Fowler

The once bred gilt system of production has a number of benefits in terms of feed efficiency and welfare, however the system relies on the production of a quality carcass and acceptable reproductive performance. Previous studies have indicated that welfare might be improved if gilts were ad-libitum fed a diet containing 60% Sugar beet pulp (Stewart et al 1993). There was a suggestion however that reproductive physiology may be put at risk using such a diet. The objective of this experiment was to identify differences in reproductive performance using two different energy sources in gestation and to manipulate nutrition during lactation to study the effect on carcass quality.


Author(s):  
M. Cropper ◽  
M. Lloyd ◽  
G.C. Emmans ◽  
C.E. Hinks

The experiment described here was designed to test the proposition that lambs, given access to two feeds, as a choice, one abundant in crude protein (CP), the other deficient, can both select a diet which supports their potential growth rate and which avoids excesses of protein intake.Twenty four Suffolk x Greyface wether and females, at a mean liveweight of 20.2 kg (s.e. 0.6) were individually housed and their feed intake and liveweight recorded weekly.The four pelleted feeds used were highly digestible and had estimated energy yields of 10.5 MJ ME/kg freshweight. The basal feed (A) was made from equal parts barley and sugar beet pulp plus a vitamin/mineral mix. It contained 91 g CP/kg FW. Feed D was made by substituting fishmeal for the barley in feed A such that it contained 383g CP/kg. Feed B contained one third D and two thirds A and contained 182g CP/kg. Féed C contained two thirds D and one third A, giving a CP content of 266g CP/kg. Thus each of the four feeds A, B, C and D could be described in terms of either the proportion of feed A or the crude protein which it contained.Four lambs were offered feed A alone, and four lambs received feed B only. Twelve of the lambs were given ad 1ibitum access to both the basal feed A and one of the three other feeds B, C and D, for ten weeks. Four lambs were offered a choice between feed B and feed D for four weeks.


1995 ◽  
Vol 1995 ◽  
pp. 178-178
Author(s):  
A H Stewart ◽  
S A Edwards ◽  
V R Fowler

The once bred gilt system of production has a number of benefits in terms of feed efficiency and welfare, however the system relies on the production of a quality carcass and acceptable reproductive performance. Previous studies have indicated that welfare might be improved if gilts were ad-libitum fed a diet containing 60% Sugar beet pulp (Stewart et al 1993). There was a suggestion however that reproductive physiology may be put at risk using such a diet. The objective of this experiment was to identify differences in reproductive performance using two different energy sources in gestation and to manipulate nutrition during lactation to study the effect on carcass quality.


1999 ◽  
Vol 1999 ◽  
pp. 140-140
Author(s):  
J. J. Hyslop ◽  
D. Cuddeford

There is increased interest in using sugar beet pulp (SBP) products as forage replacers in equine diets. Previous work (Hyslop et al 1998) has indicated that SBP products may suppress voluntary feed intake (VFI) in ponies when they are the major fibre source at between 550-700 g/kg total diet dry matter (DM). This study examines VFI and apparent digestibility in vivo where soaked unmolassed sugar beet pulp (USBP) was offered as a partial forage replacement to ponies receiving ad libitum grass hay.Four mature Welsh-cross pony geldings (280 kg LW s.e. 6.6) were individually housed and offered 0.86 kg/d of micronised barley (MB) and given ad libitum access to grass hay (HAY). In addition, ponies were offered either 0, 1, 2, or 3 kg/d USBP (U0, U1, U2 and U3 respectively) according to a 4 x 4 latin square changeover experimental design.


2003 ◽  
Vol 2003 ◽  
pp. 161-161
Author(s):  
J. J. Hyslop

Although overall intake figures were high, critical levels (~400 g/kg DM) of unmolassed sugar beet pulp (USBP) inclusion suppressed dry matter intake (DMI) in ponies by up to 35% when included in complete pelleted diets made with dried grass (Hyslop, 2002). Dulphy et al (1997) have concluded that horses consume straw-based forages at lower levels than grass or legume-based forages. Given this observation with straw based diets, the objective of this study was to examine DMI, in vivo apparent digestibilities and nutritive values in ponies offered pelleted complete diets made from ground wheat straw and containing USBP at inclusion levels between 400 – 800 g/kg DM.


1998 ◽  
Vol 1998 ◽  
pp. 132-132 ◽  
Author(s):  
J. J. Hyslop ◽  
S. Roy ◽  
D. Cuddeford

There is increased interest, in using sugar beet pulp (SBP) products in equine diets as a major source of fibre in place of traditional forages. It has been observed that voluntary feed intake (VFI) was lower when SBP products were included in the diet of dry sows compared to other fibrous foodstuffs (Brouns, et al 1995). Equids are similar to pigs in respect that fibrous feed components must pass through the stomach and small intestine before reaching the hindgut; the primary site of fibre fermentation. This study examines the VFI and apparent digestibility in vivo of two SBP based diets and determines their ability to meet the predicted energy and protein needs of mature ponies.Five mature Welsh-cross and three mature Shetland pony geldings with a mean liveweight (LW) of 219 kg (s.e.d. 2.2) were individually housed and offered 2 kg/d dry matter (DM) of a mature threshed grass hay (THAY), 60 g/h/d minerals and ad libitum access to either soaked molassed sugar beet pulp (MSBP) or soaked unmolassed sugar beet pulp (USBP).


1999 ◽  
Vol 1999 ◽  
pp. 141-141
Author(s):  
J. J. Hyslop ◽  
B.M.L. McLean ◽  
M. J. S. Moore-Colyer ◽  
A. C. Longland ◽  
D. Cuddeford ◽  
...  

Estimates of digesta passage through specific segments of the alimentary tract are a vital component of modelling approaches which attempt to quantitatively partition digestive processes in equines. This study reports results from three studies where digesta passage of Chromium (Cr) mordanted feeds was determined in the caecum of ponies.Caecal outflow rates were determined during threein vivoapparent digestibility studies conducted using three caecally-fistulated ponies as described by Moore-Colyeret al, (1999) for studies 1 and 2; and McLeanet al, (1999) for study 3. Pony basal diets consisted of unmolassed sugar beet pulp (USBP), hay cubes (HC) or a 2:1 mix of oat hulls:naked oats (OHNO) in study 1; a 1:1 mix of USBP:HC (USHC) in study 2 and either 100% HC or one of 3 diets consisting of a 1:1 HC:barley mix where the barley was either rolled (RBHC), micronised (MBHC) or extruded (EBHC) in study 3.


2002 ◽  
Vol 2002 ◽  
pp. 29-29
Author(s):  
J. M. D. Murray ◽  
M. J. S Moore-Colyer ◽  
A. C. Longland ◽  
C. Dunnett

Feeding horses high levels of cereal starch can result in diet-related azoturia, laminitis and colic, whereas high fibre, forage-based diets do not generally elicit these conditions. Therefore, it would be advantageous to develop fibrous feeds with increased digestibilities, permitting horses with high energy demands to be sustained on greater forage: cereal starch ratios. High temperature dried (HT) alfalfa has been fed to horses for a number of years and it is common practise to combine this with sugar beet pulp (SB) another nutritious fibrous feed for horses. Synergistic effects of SB when added to fibre-based diets have been observed in other species in vivo (Longland et al., 1994) whereby the digestibility of graminaceous feeds has been increased. However, such effects have been little examined in horses fed a leguminous-forage diet. The aim of this study therefore, was to determine if SB enhanced the digestibility of alfalfa, a forage legume that is increasingly being fed to equines in the UK.


2002 ◽  
Vol 2002 ◽  
pp. 32-32 ◽  
Author(s):  
J. J. Hyslop

Previous work has indicated that unmolassed sugar beet pulp (USBP) may suppress voluntary feed intake (VFI) in ponies when offered as the major component; but not when offered as a relatively minor component of the diet (Hyslop et al, 1998, 1999). However, critical levels of USBP inclusion in equine diets remain to be established. This study examines VFI, in vivo apparent digestibilities and nutritive values in ponies offered pelleted complete diets containing USBP at inclusion levels between 0 – 800 g/kg dry matter (DM).


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