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Epidemiology and effect of gastrointestinal nematodes on dairy goats in Argentina.

Abstract The aim of this work was to study the epidemiology and harmful effects of gastrointestinal nematodes (GINs) on dairy goats maintained in an intensive system. Two groups of goats were studied: untreated group (UG) (subdivided into UGjun goats that kidded in June, and UGjul goats that kidded in July) and treated group (TG) (with no subgroups, treated with monepantel: 3.75 mg/kg, orally, monthly). Eggs per gram (epg) in faeces were counted, faecal culture was performed to differentiate nematode genera and milk production was measured. Differences between groups were compared using least squares means analysis of variance (milk production and milking period length) and Kruskal-Wallis test (faecal egg counts). Nematode infection was moderate, with Haemonchus and Trichostrongylus being the dominant genera; the faecal egg counts reached the level of 2000 only once throughout the study. Goats that kidded in June had higher egg count after parturition (UGjun = 1564 epg), with significant differences (p < 0.04) from those that still had not kidded (UGjul = 962 epg). Over the entire trial period, the mean total milk production of TG (399.5 L ± 34.0 L) was significantly higher (p < 0.05) than that of UG (281.6 L ± 37.5 L), representing an increase of 41.8% in total milk yield. The results of this study show a post-partum peak in egg count and a negative effect of GINs on milk yield, even with moderate infections.
PMID
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Authors

Mayor MeshTerms

Dairying

Keywords
Journal Title the onderstepoort journal of veterinary research
Publication Year Start




PMID- 28281775
OWN - NLM
STAT- MEDLINE
DA  - 20170310
DCOM- 20170317
LR  - 20170317
IS  - 2219-0635 (Electronic)
IS  - 0030-2465 (Linking)
VI  - 84
IP  - 1
DP  - 2017 Feb 28
TI  - Epidemiology and effect of gastrointestinal nematodes on dairy goats in
      Argentina.
PG  - e1-e5
LID - 10.4102/ojvr.v84i1.1240 [doi]
AB  - The aim of this work was to study the epidemiology and harmful effects of
      gastrointestinal nematodes (GINs) on dairy goats maintained in an intensive
      system. Two groups of goats were studied: untreated group (UG) (subdivided into
      UGjun goats that kidded in June, and UGjul goats that kidded in July) and treated
      group (TG) (with no subgroups, treated with monepantel: 3.75 mg/kg, orally,
      monthly). Eggs per gram (epg) in faeces were counted, faecal culture was
      performed to differentiate nematode genera and milk production was measured.
      Differences between groups were compared using least squares means analysis of
      variance (milk production and milking period length) and Kruskal-Wallis test
      (faecal egg counts). Nematode infection was moderate, with Haemonchus and
      Trichostrongylus being the dominant genera; the faecal egg counts reached the
      level of 2000 only once throughout the study. Goats that kidded in June had
      higher egg count after parturition (UGjun = 1564 epg), with significant
      differences (p < 0.04) from those that still had not kidded (UGjul = 962 epg).
      Over the entire trial period, the mean total milk production of TG (399.5 L +/-
      34.0 L) was significantly higher (p < 0.05) than that of UG (281.6 L +/- 37.5 
      L), representing an increase of 41.8% in total milk yield. The results of this
      study show a post-partum peak in egg count and a negative effect of GINs on milk 
      yield, even with moderate infections.
FAU - Suarez, Victor H
AU  - Suarez VH
AD  - Instituto Nacional de Tecnologia Agropecuaria - AISA-IIACS, Centro de
      Investigaciones Agropecuarias. suarez.victor@inta.gob.ar.
FAU - Martinez, Gabriela M
AU  - Martinez GM
FAU - Vinabal, Alberto E
AU  - Vinabal AE
FAU - Alfaro, Jose R
AU  - Alfaro JR
LA  - eng
PT  - Journal Article
DEP - 20170228
PL  - South Africa
TA  - Onderstepoort J Vet Res
JT  - The Onderstepoort journal of veterinary research
JID - 0401107
SB  - IM
MH  - Animal Husbandry
MH  - Animals
MH  - Argentina/epidemiology
MH  - *Dairying
MH  - Feces/parasitology
MH  - Female
MH  - Goat Diseases/*epidemiology/parasitology
MH  - Goats
MH  - Milk/physiology
MH  - Nematode Infections/epidemiology/*veterinary
MH  - Parasite Egg Count/veterinary
EDAT- 2017/03/11 06:00
MHDA- 2017/03/18 06:00
CRDT- 2017/03/11 06:00
PHST- 2016/04/29 [received]
PHST- 2016/08/29 [accepted]
PHST- 2016/08/29 [revised]
AID - 1240 [pii]
PST - epublish
SO  - Onderstepoort J Vet Res. 2017 Feb 28;84(1):e1-e5. doi: 10.4102/ojvr.v84i1.1240.

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